And I'm still messing up....
So I know I messed up here. I had bumped ISO from 400, to 500 & then to ISO 800. But that was not enough. I did check my histogram, but since I can't see focus well on the lcd, & I didn't think of checking my shutter speed..... Shutter speed was just too long for these shots..... But it shows the koala on the ground in action.... So for now they're here...
NIKON CORPORATION NIKON D300, f/8 @ 185 mm, 1/25, ISO 800, No Flash